Threaded hole wall combined machining method of electric control box die casting body and electric control box

Abstract

The present disclosure provides a threaded hole wall combined machining method of an electric control box die casting body and an electric control box. The method comprises obtaining threaded hole die casting forming parameters of the electric control box die casting body; performing hole type adjustment on the threaded hole die casting forming parameters and preset threaded hole type parameters to obtain threaded hole type adjustment; and sending a wall cutting machining signal to an electric control box die casting controller according to the threaded hole type adjustment. After collecting the threaded hole die casting forming parameters, the die casting forming structure of each threaded hole position in the electric control box die casting body is determined, then the threaded hole die casting forming parameters are compared with standard die casting forming parameters, so as to determine the hole type difference of each threaded hole position, and finally the wall thickness of the specified threaded hole is adjusted according to the above difference value, so that the wall thickness of the threaded hole position which is prone to local thickening is adjusted to the specified wall thickness, thereby keeping the cooling and solidification speed of each position of the electric control box die casting body consistent.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electric control box combination processing, in particular to a threaded hole wall combination processing method of an electric control box die casting body and the electric control box. BACKGROUND

[0002] In the high-pressure casting of aluminum alloy electric control boxes, shrinkage holes and gas holes are relatively common defects. After processing, there are small holes on the local surface. When pressure is applied in the sealed channel, it will leak out of these small holes. The conventional method is to use a leak repair liquid process to block the leakage channel.

[0003] However, in some local thick areas of the electric control box, such as the position of the 8-shaped two M5 threaded holes, the wall thickness is uneven, and the shrinkage hole is prone to occur during the solidification process. Due to the small size of the M5 die casting bottom hole, the conventional method cannot use internal cooling because the diameter of the insert pin is too small to cool and transport water, and cannot accelerate the solidification speed of the thick area, resulting in inconsistent solidification speed of each position of the electric control box, and thus the shrinkage hole problem cannot be solved. SUMMARY

[0004] The purpose of the present disclosure is to overcome the shortcomings in the prior art and provide a threaded hole wall combination processing method of an electric control box die casting body and the electric control box, which effectively improves the consistency of the cooling and solidification speed.

[0005] The purpose of the present disclosure is achieved by the following technical solutions:

[0006] A threaded hole wall combination processing method of an electric control box die casting body, the method comprising:

[0007] Obtaining threaded hole die casting forming parameters of the electric control box die casting body;

[0008] Conducting hole adjustment of the threaded hole die casting forming parameters and preset threaded hole type parameters to obtain threaded hole type adjustment;

[0009] Sending a wall cutting processing signal according to the threaded hole type adjustment to an electric control box die casting controller to adjust the wall thickness of the threaded hole of the electric control box die casting body.

[0010] In one embodiment, obtaining threaded hole die casting forming parameters of the electric control box die casting body comprises: obtaining the diameter of the threaded hole of the electric control box die casting body.

[0011] In one embodiment, conducting hole adjustment of the threaded hole die casting forming parameters and preset threaded hole type parameters to obtain threaded hole type adjustment comprises: calculating the adjustment between the diameter of the threaded hole and the preset diameter to obtain the diameter adjustment.

[0012] In one of the embodiments, the method of sending a wall cutting processing enable signal to the electric cabinet pressure casting controller according to the thread hole type adjustment to adjust the wall thickness of the thread hole of the electric cabinet pressure casting body comprises: detecting whether the hole diameter adjustment matches the preset diameter difference; when the hole diameter adjustment matches the preset diameter difference, sending a wall cutting processing enable signal to the electric cabinet pressure casting controller to reduce the wall thickness of the thread hole of the electric cabinet pressure casting body.

[0013] In one of the embodiments, the method of obtaining the thread hole pressure casting forming parameters of the electric cabinet pressure casting body comprises: obtaining the thread hole depth of the electric cabinet pressure casting body.

[0014] In one of the embodiments, the method of adjusting the thread hole type adjustment by adjusting the thread hole pressure casting forming parameters and the preset thread hole type parameters comprises: obtaining the hole depth adjustment by adjusting the thread hole depth and the preset hole depth.

[0015] In one of the embodiments, the method of sending a wall cutting processing enable signal to the electric cabinet pressure casting controller according to the thread hole type adjustment to adjust the wall thickness of the thread hole of the electric cabinet pressure casting body comprises: detecting whether the hole depth adjustment matches the preset depth difference; when the hole depth adjustment does not match the preset depth difference, sending a wall cutting processing disable signal to the electric cabinet pressure casting controller to maintain the current wall thickness of the thread hole of the electric cabinet pressure casting body.

[0016] In one of the embodiments, the method of sending a wall cutting processing enable signal to the electric cabinet pressure casting controller according to the thread hole type adjustment further comprises: performing friction welding processing on the capping area of the electric cabinet pressure casting body, the capping area being adjacent to the thread hole of the electric cabinet pressure casting body to form a single inspection cavity in the capping area; performing wall thickness pressure holding leakage detection on the capping area to obtain the hole wall pressure holding leakage of the single inspection cavity; detecting whether the hole wall pressure holding leakage is greater than a first preset pressure holding leakage; when the hole wall pressure holding leakage is greater than the first preset pressure holding leakage, detecting whether the hole wall pressure holding leakage is less than or equal to a second preset pressure holding leakage; when the hole wall pressure holding leakage is less than or equal to the second preset pressure holding leakage, sending a reverse side feeding signal to the electric cabinet pressure casting controller to reduce the reverse side wall thickness reduction of the thread hole of the electric cabinet pressure casting body.

[0017] In one of the embodiments, the method of detecting whether the hole wall pressure holding leakage is less than or equal to the second preset pressure holding leakage further comprises: when the hole wall pressure holding leakage is greater than the second preset pressure holding leakage, sending a positive side material reduction signal to the electric cabinet pressure casting controller to increase the positive side wall thickness reduction of the thread hole of the electric cabinet pressure casting body.

[0018] An electric cabinet manufactured by the method of combined processing of the thread hole wall of the electric cabinet pressure casting body according to any one of the above embodiments.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] After the threaded hole pressure casting parameters are collected, the threaded hole pressure casting structure in the electric control box pressure casting body is determined, then the threaded hole pressure casting parameters are compared with the standard pressure casting parameters, so as to determine the hole type difference of each threaded hole position, finally, the wall thickness of the specified threaded hole is processed and adjusted according to the above difference value, so as to adjust the wall cutting processing mode, and the wall thickness of the threaded hole position which is prone to local thickening is adjusted to the specified wall thickness, so that the cooling and solidification speed of each position of the electric control box pressure casting body remains consistent. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Figure 1 Flow chart of threaded hole wall combined processing method of electric control box pressure casting body in an embodiment. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present disclosure, the following will make a more comprehensive description of the present disclosure with reference to the related drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terminology used in the description of the present disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] The present disclosure relates to a thread hole wall combined machining method of an electric control box die casting body. In one embodiment, the thread hole wall combined machining method of the electric control box die casting body comprises obtaining thread hole die casting forming parameters of the electric control box die casting body; performing hole type adjustment on the thread hole die casting forming parameters and preset thread hole type parameters to obtain thread hole type adjustment; and sending a wall thinning machining signal to an electric control box die casting controller according to the thread hole type adjustment to adjust the wall thickness of the thread hole of the electric control box die casting body. After collecting the thread hole die casting forming parameters, the position of each thread hole in the electric control box die casting body is determined, and then the thread hole die casting forming parameters are compared with standard die casting forming parameters to determine the hole type difference of each thread hole position. Finally, according to the above difference value, the wall thickness of the specified thread hole is machined and adjusted, so as to adjust the wall thinning machining mode, so that the wall thickness of the thread hole position which is prone to local thickening is adjusted to the specified wall thickness, so that the cooling and solidification speed of each position of the electric control box die casting body remains consistent.

[0027] Referring to Figure 1 which is a flowchart of the thread hole wall combined machining method of the electric control box die casting body according to an embodiment of the present disclosure. The thread hole wall combined machining method of the electric control box die casting body comprises part or all of the following steps.

[0028] S100: Obtain thread hole die casting forming parameters of the electric control box die casting body.

[0029] In this embodiment, the thread hole die casting forming parameters are the thread hole forming data on the electric control box die casting body, that is, the thread hole die casting forming parameters are the forming parameters after the die casting of each thread hole on the electric control box die casting body, that is, the thread hole die casting forming parameters correspond to the hole type of each thread hole on the electric control box die casting body. By collecting the thread hole die casting forming parameters, the type of each thread hole on the electric control box die casting body can be determined, so as to distinguish the required thread hole, and then determine the thread hole position that needs to be adjusted in wall thickness.

[0030] S200: Perform hole type adjustment on the thread hole die casting forming parameters and preset thread hole type parameters to obtain thread hole type adjustment.

[0031] In the embodiment, the threaded hole die casting parameter is the threaded hole forming data on the die casting body of the electric control box, that is, the threaded hole die casting parameter is the forming parameter after the die casting of each threaded hole on the die casting body of the electric control box, that is, the threaded hole die casting parameter corresponds to the hole type of each threaded hole on the die casting body of the electric control box. By collecting the threaded hole die casting parameter, the corresponding model type of each threaded hole on the die casting body of the electric control box is determined, so that the required threaded hole is distinguished, and then the threaded hole position requiring wall thickness adjustment is determined. The preset threaded hole type parameter is the standard threaded hole forming data on the die casting body of the electric control box, that is, the preset threaded hole type parameter is the reference forming parameter after the die casting of each threaded hole on the die casting body of the electric control box, that is, the preset threaded hole type parameter corresponds to the specified hole type of the threaded hole on the die casting body of the electric control box. By the hole adjustment amount of the threaded hole die casting parameter and the preset threaded hole type parameter, specifically, the least square difference between the threaded hole die casting parameter and the preset threaded hole type parameter is obtained, the hole types of the threaded holes on the die casting body of the electric control box are compared, and the difference between the threaded holes on the die casting body of the electric control box and the standard threaded hole is determined.

[0032] S300: According to the threaded hole type adjustment, a wall cutting processing loss signal is sent to the die casting controller of the electric control box to adjust the wall thickness of the threaded hole of the die casting body of the electric control box.

[0033] In the embodiment, the threaded hole type adjustment is based on the threaded hole pressure casting parameters and the preset threaded hole type parameters. The threaded hole pressure casting parameters are the threaded hole forming data on the electric cabinet pressure casting body, that is, the threaded hole pressure casting parameters are the forming parameters of each threaded hole after the threaded hole pressure casting of the electric cabinet pressure casting body, that is, the threaded hole pressure casting parameters correspond to the hole type of each threaded hole on the electric cabinet pressure casting body. By collecting the threaded hole pressure casting parameters, the corresponding model type of each threaded hole on the electric cabinet pressure casting body is determined, so that the required threaded hole is distinguished, and then the threaded hole position requiring wall thickness adjustment is determined. The preset threaded hole type parameters are the standard threaded hole forming data on the electric cabinet pressure casting body, that is, the preset threaded hole type parameters are the reference forming parameters after the threaded hole pressure casting of each threaded hole on the electric cabinet pressure casting body, that is, the preset threaded hole type parameters correspond to the specified hole type of the threaded hole on the electric cabinet pressure casting body. By adjusting the threaded hole pressure casting parameters and the preset threaded hole type parameters, specifically, the least square difference between the threaded hole pressure casting parameters and the preset threaded hole type parameters is obtained, the hole types of each threaded hole on the electric cabinet pressure casting body are compared to determine the difference between each threaded hole on the electric cabinet pressure casting body and the standard threaded hole. After determining the threaded hole type adjustment, the hole type of each threaded hole on the electric cabinet pressure casting body is determined, which is convenient for processing the corresponding wall thickness of the specified threaded hole, so that the wall thickness of the specified threaded hole meets the solidification speed requirement, so that the solidification speed of the thick position corresponding to the threaded hole of the electric cabinet pressure casting body is consistent with the solidification speed of other positions.

[0034] In the above embodiment, after collecting the threaded hole pressure casting parameters, the threaded hole pressure casting structure of each threaded hole position in the electric cabinet pressure casting body is determined, then the threaded hole pressure casting parameters are compared with the standard pressure casting parameters to determine the hole type difference of each threaded hole position, and finally the corresponding wall thickness of the specified threaded hole is processed and adjusted according to the above difference value, so as to adjust the wall cutting processing mode, so that the wall thickness of the threaded hole position which is prone to local thickening is adjusted to the specified wall thickness, so that the cooling and solidification speed of each position of the electric cabinet pressure casting body is consistent.

[0035] In one of the embodiments, the threaded hole pressure casting parameter of the electric control box pressure casting body is acquired, including: acquiring the threaded hole diameter of the electric control box pressure casting body. In the embodiment, the threaded hole pressure casting parameter is the threaded hole forming data on the electric control box pressure casting body, that is, the threaded hole pressure casting parameter is the forming parameter after the threaded hole pressure casting of each threaded hole on the electric control box pressure casting body is completed, that is, the threaded hole pressure casting parameter corresponds to the hole type of each threaded hole on the electric control box pressure casting body. Through the acquisition of the threaded hole pressure casting parameter, the type of each threaded hole on the electric control box pressure casting body is determined, so that the required threaded hole is distinguished, and then the threaded hole position requiring wall thickness adjustment is determined. The threaded hole pressure casting parameter includes the threaded hole diameter of the electric control box pressure casting body, and the threaded hole diameter is the inner hole diameter corresponding to each threaded hole on the electric control box pressure casting body, that is, the threaded hole diameter corresponds to the size of each threaded hole on the electric control box pressure casting body. Through the acquisition of the threaded hole diameter, the size of each threaded hole on the electric control box pressure casting body is determined.

[0036] Further, the threaded hole die forming parameters are adjusted with preset threaded hole type parameters to obtain threaded hole type adjustment, including: obtaining adjustment between the threaded hole diameter and the preset hole diameter to obtain hole diameter adjustment. In the embodiment, the threaded hole die forming parameters are threaded hole forming data on the die casting body of the electric control box, that is, the threaded hole die forming parameters are forming parameters after the completion of die casting of each threaded hole on the die casting body of the electric control box, that is, the threaded hole die forming parameters correspond to the hole type of each threaded hole on the die casting body of the electric control box. By collecting the threaded hole die forming parameters, the corresponding model type of each threaded hole on the die casting body of the electric control box is determined, so that the required threaded hole is distinguished, and then the threaded hole position requiring wall thickness adjustment is determined. The preset threaded hole type parameters are standard threaded hole forming data on the die casting body of the electric control box, that is, the preset threaded hole type parameters are reference forming parameters after the completion of die casting of each threaded hole on the die casting body of the electric control box, that is, the preset threaded hole type parameters correspond to the specified hole type of the threaded hole on the die casting body of the electric control box. By adjusting the threaded hole die forming parameters and the preset threaded hole type parameters, specifically, obtaining the least square difference between the threaded hole die forming parameters and the preset threaded hole type parameters, the hole types of each threaded hole on the die casting body of the electric control box are compared to determine the difference between each threaded hole on the die casting body of the electric control box and the standard threaded hole. The threaded hole diameter of the die casting body of the electric control box includes the threaded hole diameter of the die casting body of the electric control box, that is, the threaded hole diameter corresponds to the size of each threaded hole on the die casting body of the electric control box. By collecting the threaded hole diameter, the hole diameter size of each threaded hole on the die casting body of the electric control box is determined. After obtaining adjustment between the threaded hole diameter and the preset hole diameter, the difference between the hole diameter of each threaded hole on the die casting body of the electric control box and the hole diameter of the standard threaded hole is determined, so that the hole type of each threaded hole on the die casting body of the electric control box is distinguished, and then the specified threaded hole requiring wall thickness adjustment is selected.

[0037] Further, the wall thickness of the threaded hole of the electric cabinet pressure casting body is adjusted by sending a wall thickness reduction enabling signal to the electric cabinet pressure casting controller according to the threaded hole type adjustment, comprising: detecting whether the hole diameter adjustment matches the preset diameter difference; when the hole diameter adjustment matches the preset diameter difference, sending a wall thickness reduction enabling signal to the electric cabinet pressure casting controller to reduce the wall thickness of the threaded hole of the electric cabinet pressure casting body. In this embodiment, the threaded hole type adjustment is obtained based on the threaded hole pressure casting forming parameter and the preset threaded hole type parameter. The threaded hole pressure casting forming parameter is the threaded hole forming data on the electric cabinet pressure casting body, that is, the threaded hole pressure casting forming parameter is the forming parameter after the completion of the pressure casting of each threaded hole on the electric cabinet pressure casting body, that is, the threaded hole pressure casting forming parameter corresponds to the hole type of each threaded hole on the electric cabinet pressure casting body. By collecting the threaded hole pressure casting forming parameter, the type of each threaded hole on the electric cabinet pressure casting body is determined, so that the required threaded hole is distinguished, and the position of the threaded hole that needs to be adjusted in wall thickness is determined. The preset threaded hole type parameter is the standard threaded hole forming data on the electric cabinet pressure casting body, that is, the preset threaded hole type parameter is the reference forming parameter after the completion of the pressure casting of each threaded hole on the electric cabinet pressure casting body, that is, the preset threaded hole type parameter corresponds to the specified hole type of the threaded hole on the electric cabinet pressure casting body. By adjusting the threaded hole pressure casting forming parameter and the preset threaded hole type parameter, specifically, the least square difference between the threaded hole pressure casting forming parameter and the preset threaded hole type parameter is obtained, the hole types of each threaded hole on the electric cabinet pressure casting body are compared to determine the difference between each threaded hole on the electric cabinet pressure casting body and the standard threaded hole. After determining the threaded hole type adjustment, the hole type of each threaded hole on the electric cabinet pressure casting body is determined, so that the wall thickness of the specified threaded hole is processed, so that the wall thickness of the specified threaded hole meets the solidification speed requirement, so that the solidification speed of the thick position corresponding to the threaded hole of the electric cabinet pressure casting body is consistent with the solidification speed of other positions. The threaded hole pressure casting forming parameter includes the threaded hole diameter of the electric cabinet pressure casting body, and the threaded hole diameter is the inner hole diameter corresponding to each threaded hole on the electric cabinet pressure casting body, that is, the threaded hole diameter corresponds to the size of each threaded hole on the electric cabinet pressure casting body. By collecting the threaded hole diameter, the size of the hole diameter of each threaded hole on the electric cabinet pressure casting body is determined. After adjusting the threaded hole diameter and the preset hole diameter, the difference between the hole diameter of each threaded hole on the electric cabinet pressure casting body and the hole diameter of the standard threaded hole is determined, so that the hole type of each threaded hole on the electric cabinet pressure casting body is distinguished, and the specified threaded hole that needs to be adjusted in wall thickness is selected.The aperture adjustment matches the preset aperture difference, indicating that the aperture of the currently selected threaded hole on the electric control box die casting body is the specified aperture, i.e., indicating that the currently selected threaded hole on the electric control box die casting body is the specified threaded hole, i.e., indicating that the wall thickness of the currently selected threaded hole on the electric control box die casting body is locally thick. A wall reduction processing enable signal is sent to the electric control box die casting controller to reduce the wall thickness of the threaded hole of the electric control box die casting body, so that the wall thickness of the threaded hole with the specified aperture on the electric control box die casting body is reduced to be consistent with the solidification rate at other positions.

[0038] In another embodiment, when the aperture adjustment does not match the preset aperture difference, a wall reduction processing disable signal is sent to the electric control box die casting controller to maintain the current wall thickness of the threaded hole of the electric control box die casting body. At this time, the aperture of the currently selected threaded hole on the electric control box die casting body is larger or smaller than the aperture of the specified threaded hole, i.e., the wall thickness at this position will not be thick, which is not a threaded hole that needs to be adjusted in wall thickness, so wall thickness reduction at this position is not needed.

[0039] In another embodiment, the specified threaded hole is an M5 threaded hole with an aperture of 3mm to 3.5mm, and specifically, the aperture of the specified threaded hole is 3.2mm. Moreover, the position that needs to be adjusted in wall thickness corresponds to two threaded holes to form two M5 threaded holes in the shape of an 8.

[0040] In one embodiment, threaded hole die casting forming parameters of the electric control box die casting body are obtained, including obtaining the threaded hole depth of the electric control box die casting body. In this embodiment, the threaded hole die casting forming parameter is the forming data of the threaded hole on the electric control box die casting body, i.e., the threaded hole die casting forming parameter is the forming parameter after the die casting of each threaded hole on the electric control box die casting body, i.e., the threaded hole die casting forming parameter corresponds to the hole type of each threaded hole on the electric control box die casting body. By collecting the threaded hole die casting forming parameter, the type of each threaded hole on the electric control box die casting body can be determined, so that the required threaded hole can be distinguished, and the position of the threaded hole that needs to be adjusted in wall thickness can be determined. The threaded hole die casting forming parameter includes the threaded hole depth of the electric control box die casting body, and the threaded hole depth is the inner hole depth corresponding to each threaded hole on the electric control box die casting body, i.e., the threaded hole depth corresponds to the size of each threaded hole on the electric control box die casting body. By collecting the threaded hole depth, the depth of the hole of each threaded hole on the electric control box die casting body can be determined.

[0041] Further, the threaded hole die casting forming parameters are adjusted with preset threaded hole type parameters to obtain threaded hole type adjustment, including: obtaining adjustment between the threaded hole depth and the preset hole depth to obtain hole depth adjustment. In the embodiment, the threaded hole die casting forming parameters are threaded hole forming data on the die casting body of the electric control box, that is, the threaded hole die casting forming parameters are forming parameters after die casting of each threaded hole on the die casting body of the electric control box, that is, the threaded hole die casting forming parameters correspond to the hole type of each threaded hole on the die casting body of the electric control box. By collecting the threaded hole die casting forming parameters, the corresponding model type of each threaded hole on the die casting body of the electric control box is determined, so that the required threaded hole is distinguished, and then the threaded hole position requiring wall thickness adjustment is determined. The preset threaded hole type parameters are standard threaded hole forming data on the die casting body of the electric control box, that is, the preset threaded hole type parameters are reference forming parameters after die casting of each threaded hole on the die casting body of the electric control box, that is, the preset threaded hole type parameters correspond to the specified hole type of the threaded hole on the die casting body of the electric control box. By adjusting the threaded hole die casting forming parameters and the preset threaded hole type parameters, specifically, obtaining the least square difference between the threaded hole die casting forming parameters and the preset threaded hole type parameters, the hole types of each threaded hole on the die casting body of the electric control box are compared to determine the difference between each threaded hole on the die casting body of the electric control box and the standard threaded hole. The threaded hole depth of the die casting body of the electric control box includes the threaded hole depth of the die casting body of the electric control box, that is, the threaded hole depth corresponds to the size of each threaded hole on the die casting body of the electric control box. By collecting the threaded hole depth, the depth of each threaded hole on the die casting body of the electric control box is determined. After obtaining adjustment between the threaded hole depth and the preset hole depth, the difference between the hole depth of each threaded hole on the die casting body of the electric control box and the hole depth of the standard threaded hole is determined, so that the hole type of each threaded hole on the die casting body of the electric control box is distinguished, and then the specified threaded hole requiring wall thickness adjustment is selected.

[0042] Further, the wall thickness adjustment method comprises the following steps: detecting whether the hole depth difference matches the preset hole depth difference; and sending a wall thickness adjustment signal to the electric cabinet die casting controller when the hole depth difference does not match the preset hole depth difference, so as to maintain the current wall thickness of the threaded hole of the electric cabinet die casting body. In the embodiment, the threaded hole type difference is obtained based on the threaded hole die casting parameter and the preset threaded hole type parameter. The threaded hole die casting parameter is the threaded hole forming data of the electric cabinet die casting body, that is, the threaded hole die casting parameter is the forming parameter of each threaded hole after the die casting of the electric cabinet die casting body, and the threaded hole die casting parameter corresponds to the hole type of each threaded hole of the electric cabinet die casting body. By collecting the threaded hole die casting parameter, the type of each threaded hole of the electric cabinet die casting body can be determined, so that the required threaded hole can be distinguished, and the position of the threaded hole that needs to be adjusted in wall thickness can be determined. The preset threaded hole type parameter is the standard threaded hole forming data of the electric cabinet die casting body, that is, the preset threaded hole type parameter is the reference forming parameter of each threaded hole after the die casting of the electric cabinet die casting body, and the preset threaded hole type parameter corresponds to the specified hole type of the threaded hole of the electric cabinet die casting body. By comparing the threaded hole die casting parameter and the preset threaded hole type parameter, specifically, the least square difference between the threaded hole die casting parameter and the preset threaded hole type parameter is calculated, the hole types of each threaded hole of the electric cabinet die casting body are compared, and the difference between each threaded hole of the electric cabinet die casting body and the standard threaded hole is determined. After the threaded hole type difference is determined, the hole type of each threaded hole of the electric cabinet die casting body is determined, the wall thickness of the specified threaded hole is processed, the wall thickness of the specified threaded hole meets the solidification speed requirement, and the solidification speed of the thick position corresponding to the threaded hole of the electric cabinet die casting body is consistent with the solidification speed of other positions. The threaded hole die casting parameter includes the threaded hole depth of the electric cabinet die casting body, and the threaded hole depth corresponds to the size of each threaded hole of the electric cabinet die casting body. By collecting the threaded hole depth, the depth of each threaded hole of the electric cabinet die casting body can be determined. After the threaded hole depth and the preset hole depth are calculated, the difference between the hole depth of each threaded hole of the electric cabinet die casting body and the hole depth of the standard threaded hole is determined, so that the hole type of each threaded hole of the electric cabinet die casting body can be distinguished, and the specified threaded hole that needs to be adjusted in wall thickness can be selected.The hole depth difference is not matched with the preset diameter difference, indicating that the hole depth of the current selected threaded hole on the electric control box die casting body is not consistent with the specified hole depth, i.e., indicating that the current selected threaded hole on the electric control box die casting body is a non-specified threaded hole, i.e., indicating that the wall thickness of the current selected threaded hole on the electric control box die casting body is normal thickness, at this time, a wall thickness reduction processing disabled signal is sent to the electric control box die casting controller to maintain the current wall thickness of the threaded hole of the electric control box die casting body, at this time, the hole depth of the current selected threaded hole on the electric control box die casting body is larger or smaller than the hole depth of the specified threaded hole, i.e., the wall thickness of this position will not appear thickening problem, which is not a threaded hole that needs to be adjusted for wall thickness, so there is no need to reduce the wall thickness of this position.

[0043] In another embodiment, when the hole depth difference is matched with the preset diameter difference, a wall thickness reduction processing enabled signal is sent to the electric control box die casting controller to reduce the wall thickness of the threaded hole of the electric control box die casting body. At this time, it indicates that the hole depth of the current selected threaded hole on the electric control box die casting body is the specified hole depth, i.e., it indicates that the current selected threaded hole on the electric control box die casting body is the specified threaded hole, i.e., it indicates that the wall thickness of the current selected threaded hole on the electric control box die casting body is locally thickened, by sending a wall thickness reduction processing enabled signal to the electric control box die casting controller to reduce the wall thickness of the threaded hole of the electric control box die casting body, so that the wall thickness of the threaded hole with the specified hole depth on the electric control box die casting body is reduced to be consistent with the solidification rate at other positions.

[0044] In another embodiment, the preset hole depth is 9.6mm to 10.8mm, specifically, the preset hole depth is 10.2mm. The hole depth is obtained by an ultrasonic range finder.

[0045] In one of the embodiments, the method further comprises: sending a wall reduction failure signal to the electric control box die casting controller according to the thread hole type adjustment; then performing friction welding on a capping area of the electric control box die casting body, the capping area being adjacent to the thread hole of the electric control box die casting body, so as to form a single detection cavity in the capping area; performing wall thickness pressure holding leak detection on the capping area to obtain a hole wall pressure holding leakage amount of the single detection cavity; detecting whether the hole wall pressure holding leakage amount is greater than a first preset pressure holding leakage amount; when the hole wall pressure holding leakage amount is greater than the first preset pressure holding leakage amount, detecting whether the hole wall pressure holding leakage amount is less than or equal to a second preset pressure holding leakage amount; when the hole wall pressure holding leakage amount is less than or equal to the second preset pressure holding leakage amount, sending a reverse surface feeding signal to the electric control box die casting controller to reduce the reverse surface wall thickness reduction amount of the thread hole of the electric control box die casting body. In this embodiment, the electric control box die casting body is a die casting structure formed after the electric control box is die cast, and the capping area is a leak detection capping position of the electric control box die casting body, so as to form a single detection cavity for leak detection. The single detection cavity is a leak detection cavity formed after the capping area is welded with a cover plate, and the single detection cavity corresponds to a specified thread hole, specifically, the capping area is selected based on the specified thread hole, so that the edge of the single detection cavity has the specified thread hole, that is, part of the side wall of the single detection cavity is the side wall of the specified thread hole. The wall thickness pressure holding leak detection on the capping area is leak detection on the wall thickness of the single detection cavity, so that the obtained hole wall pressure holding leakage amount is related to the wall thickness of the specified thread hole. The hole wall pressure holding leakage amount is the leakage condition of the single detection cavity under pressure holding test, that is, the hole wall pressure holding leakage amount is the pressure size leaked on the side wall of the single detection cavity under test pressure. The first preset pressure holding leakage amount is a leakage standard amount of the single detection cavity under pressure holding test, that is, the first preset pressure holding leakage amount corresponds to the qualified side wall thickness of the single detection cavity, and the hole wall pressure holding leakage amount is greater than the first preset pressure holding leakage amount, which indicates that the leakage pressure on the side wall of the single detection cavity under test pressure is too large, that is, it indicates that the specified thread hole side wall of the single detection cavity has a local thick wall condition.The second preset pressure maintaining leakage amount is the positive and negative face thickening area of the sidewall of the designated threaded hole of the single detection cavity, and the second preset pressure maintaining leakage amount is greater than the first preset pressure maintaining leakage amount. The hole wall pressure maintaining leakage amount is less than or equal to the second preset pressure maintaining leakage amount, indicating that the wall thickness of the designated threaded hole of the single detection cavity exists leakage due to local thickening, but the leakage amount is not large. This situation is caused by the fact that the negative face wall thickness of the designated threaded hole of the single detection cavity is reduced too much, resulting in insufficient mechanical strength of the wall surface. Moreover, the positive face wall thickness of the designated threaded hole of the single detection cavity remains normal thickness, that is, the positive face does not appear local thickening. At this time, a negative face feeding signal is sent to the electric control box die casting controller to reduce the negative face wall thickness reduction amount of the threaded hole of the electric control box die casting body, so that the negative face wall thickness reduction of the threaded hole of the electric control box die casting body is reduced, so that the negative face wall thickness of the threaded hole of the electric control box die casting body is kept within the normal range of wall thickness, so as to avoid the case of too low strength caused by too thin negative face wall thickness.

[0046] Further, the detection of whether the hole wall pressure holding leakage amount is less than or equal to the second preset pressure holding leakage amount further comprises: when the hole wall pressure holding leakage amount is greater than the second preset pressure holding leakage amount, sending a positive face material reduction signal to the electric control box pressure casting controller to increase the positive face wall thickness reduction amount of the threaded hole of the electric control box pressure casting body. In the embodiment, the electric control box pressure casting body is a pressure casting structure formed after the electric control box is pressure cast, and the capping area is a leak testing capping position of the electric control box pressure casting body to facilitate the formation of a single test cavity for leak testing. The single test cavity is a leak testing cavity formed after the cover plate is welded on the capping area, and the single test cavity corresponds to the specified threaded hole. Specifically, the capping area is selected based on the specified threaded hole, so that the single test cavity has the specified threaded hole on its edge, that is, part of the side wall of the single test cavity is the side wall of the specified threaded hole. The wall thickness pressure holding leak testing of the capping area is to detect the wall thickness of the single test cavity, so that the obtained hole wall pressure holding leakage amount is related to the wall thickness of the specified threaded hole. The hole wall pressure holding leakage amount is the leakage condition of the single test cavity under pressure holding test, that is, the hole wall pressure holding leakage amount is the pressure size leaked on the side wall of the single test cavity under test pressure. The first preset pressure holding leakage amount is the leakage standard amount of the single test cavity under pressure holding test, that is, the first preset pressure holding leakage amount corresponds to the qualified side wall thickness of the single test cavity. If the hole wall pressure holding leakage amount is greater than the first preset pressure holding leakage amount, it indicates that the leakage pressure on the side wall of the single test cavity under test pressure is too large, that is, it indicates that the specified threaded hole side wall of the single test cavity has a local thick area. The second preset pressure holding leakage amount is the positive and reverse face thick area amount of the specified threaded hole side wall of the single test cavity, and the second preset pressure holding leakage amount is greater than the first preset pressure holding leakage amount. If the hole wall pressure holding leakage amount is greater than the second preset pressure holding leakage amount, it indicates that the specified threaded hole of the single test cavity has a leakage caused by local thickening, and the leakage amount is too large. This situation is caused by the fact that the positive face wall thickness reduction of the specified threaded hole of the single test cavity is too small, which leads to the wrapping gas phenomenon. That is, the positive face wall gas of the specified threaded hole of the single test cavity forms a cavity inside after being discharged. At this time, the positive face material reduction signal is sent to the electric control box pressure casting controller to increase the positive face wall thickness reduction amount of the threaded hole of the electric control box pressure casting body, so as to increase the reduction thickness of the positive face wall of the threaded hole of the electric control box pressure casting body, so as to reduce the wrapping gas phenomenon of the positive face wall thickness of the specified threaded hole of the single test cavity, thereby ensuring the consistency of the solidification speed of each position of the electric control box pressure casting body, and improving the internal gas tightness of the electric control box pressure casting body to avoid the thickening and poor gas tightness problems of the electric control box at the 8-shaped M5 threaded hole.

[0047] In another embodiment, the adjustment of the thickness reduction of the front and back walls of the threaded hole of the electric control box die casting body is an adjustment of the reduction of the position corresponding to the threaded hole on the die casting mold, for example, reducing the back wall thickness reduction of the threaded hole of the electric control box die casting body is to reduce the die casting protrusion height at the position corresponding to the back wall of the threaded hole on the die casting mold; for another example, increasing the front wall thickness reduction of the threaded hole of the electric control box die casting body is to increase the die casting protrusion height at the position corresponding to the front wall of the threaded hole on the die casting mold. Wherein, the adjustment of the front and back wall thickness reduction of the threaded hole can be the adjustment of the structure of the die casting mold when the second die casting after remelting the unqualified electric control box die casting body.

[0048] In another embodiment, the first preset holding pressure leakage is 50 Pa, and the second preset holding pressure leakage is 300 Pa. Wherein, the holding pressure leakage of the hole wall is collected by a leak test instrument.

[0049] In another embodiment, during the process of reducing the back wall thickness reduction, the leakage is between 50 Pa and 300 Pa, and for each 50 Pa increase in leakage, the back wall thickness reduction is 0.02 mm to 0.07 mm, and specifically 0.05 mm.

[0050] In another embodiment, during the process of increasing the front wall thickness reduction, the leakage is greater than 300 Pa, and for each 50 Pa increase in leakage, the front wall thickness reduction is 0.08 mm to 0.13 mm, and specifically 0.10 mm.

[0051] In another embodiment, the threaded hole is on the front surface of the electric control box die casting body, and the other surface is the back surface.

[0052] In another embodiment, the wall thickness of the capped area is tested for holding pressure leakage to obtain the holding pressure leakage of the hole wall of the single detection cavity, specifically including the following steps:

[0053] Position the electric control box die casting body with a cover plate welded on the capped area on the leak test platform of the leak test instrument;

[0054] Pre-charge the single detection cavity of the electric control box die casting body;

[0055] Secondary charge the single detection cavity of the electric control box die casting body;

[0056] Perform holding pressure operation on the single detection cavity of the electric control box die casting body to obtain the holding pressure leakage of the hole wall.

[0057] Wherein, the pre-charge time is 5 seconds, the secondary charge time is 15 seconds, the holding pressure operation time is 40 seconds, and the leak test time during holding pressure is 20 seconds.

[0058] In one of the embodiments, the present disclosure further relates to an electric control box manufactured by the threaded hole wall combined machining method of the electric control box die casting body according to any one of the above embodiments. In the embodiment, the threaded hole wall combined machining method of the electric control box die casting body comprises obtaining threaded hole die casting forming parameters of the electric control box die casting body; performing hole type adjustment on the threaded hole die casting forming parameters and preset threaded hole type parameters to obtain threaded hole type adjustment; and sending a wall cutting machining signal to an electric control box die casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded hole of the electric control box die casting body. After the threaded hole die casting forming parameters are collected, the threaded hole position die casting forming structure of the electric control box die casting body is determined, and then the threaded hole die casting forming parameters are compared with standard die casting forming parameters to facilitate determination of the hole type difference of each threaded hole position. Finally, according to the above difference value, the wall thickness of the specified threaded hole is machined and adjusted, so as to adjust the wall cutting machining mode, so that the wall thickness of the threaded hole position which is prone to local thickening is adjusted to the specified wall thickness, so that the cooling and solidification speed of each position of the electric control box die casting body remains consistent.

[0059] The above embodiments only express several embodiments of the present disclosure, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, which are within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A method of combined machining of a threaded hole wall of an electric control box die casting, characterized by, The method comprises: obtaining a thread hole die casting parameter of the electric control box die casting body; performing hole adjustment on the thread hole die casting parameter and a preset thread hole type parameter to obtain a thread hole type adjustment; sending a wall reduction processing enable signal to an electric control box die casting controller according to the thread hole type adjustment, so as to adjust the wall thickness of the thread hole of the electric control box die casting body; wherein the obtaining of the thread hole die casting parameter of the electric control box die casting body comprises: obtaining a thread hole diameter and a thread hole depth of the electric control box die casting body; performing hole adjustment on the thread hole die casting parameter and a preset thread hole type parameter to obtain a thread hole type adjustment, comprises: obtaining a hole diameter adjustment between the thread hole diameter and a preset hole diameter, and a hole depth adjustment between the thread hole depth and a preset hole depth; sending a wall reduction processing enable signal to an electric control box die casting controller according to the thread hole type adjustment, comprises: detecting whether the hole diameter adjustment matches a preset diameter adjustment; when the hole diameter adjustment matches the preset diameter adjustment, sending a wall reduction processing enable signal to the electric control box die casting controller, so as to reduce the wall thickness of the thread hole of the electric control box die casting body; detecting whether the hole depth adjustment matches a preset depth adjustment; when the hole depth adjustment does not match the preset depth adjustment, sending a wall reduction processing disable signal to the electric control box die casting controller, so as to maintain the current wall thickness of the thread hole of the electric control box die casting body.

2. The method according to claim 1, wherein After sending the wall reduction processing disable signal to the electric control box die casting controller according to the thread hole type adjustment, the method further comprises: performing friction welding processing on a capping area of the electric control box die casting body, the capping area being arranged adjacent to the thread hole of the electric control box die casting body, so as to form a single detection cavity in the capping area; performing wall thickness pressure maintaining leakage detection on the capping area, so as to obtain a hole wall pressure maintaining leakage amount of the single detection cavity; detecting whether the hole wall pressure maintaining leakage amount is greater than a first preset pressure maintaining leakage amount; when the hole wall pressure maintaining leakage amount is greater than the first preset pressure maintaining leakage amount, detecting whether the hole wall pressure maintaining leakage amount is less than or equal to a second preset pressure maintaining leakage amount; when the hole wall pressure maintaining leakage amount is less than or equal to the second preset pressure maintaining leakage amount, sending a reverse surface material feeding signal to the electric control box die casting controller, so as to reduce a reverse surface wall thickness reduction amount of the thread hole of the electric control box die casting body.

3. The method of claim 2, wherein the method further comprises: After detecting whether the hole wall pressure maintaining leakage amount is less than or equal to the second preset pressure maintaining leakage amount, the method further comprises: when the hole wall pressure maintaining leakage amount is greater than the second preset pressure maintaining leakage amount, sending a positive surface material feeding signal to the electric control box die casting controller, so as to increase a positive surface wall thickness reduction amount of the thread hole of the electric control box die casting body.

4. An electric control box characterized by comprising: The electric control box die casting body is manufactured by using the thread hole wall combined processing method according to any one of claims 1 to 3.

Images